RECON: TNO occultation with 14LM28

Event between 14LM28 and star TYC21547-00810-1 with event index number of 199922

Geocentric closest approach at 2018/05/14 16:35:43 UTC

J2000 position of star is 17:06:03.0 +21:30:44
Equinox of date position of star is 17:06:47.8 +21:29:22
Stellar brightness V=11.9, use SENSEUP=16
Star is 133 degrees from the moon. Moon is 1% illuminated.
TNO apparent brightness V=22.0

TNO is 16.8 AU from the Sun and 16.1 AU from the Earth.
The TNO is moving 31.3 km/sec on the sky relative to the star, or, 9.7 arcsec/hr.
The 1-sigma error in the time of the event is 100 seconds.
The 1-sigma cross-track error in the shadow position is 3531 km.

The TNO has an absolute magnitude Hv=9.6
Diameter=73.1 km assuming a 5% albedo -- 2.3 sec chord
Diameter=29.8 km assuming a 30% albedo -- 1.0 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 14LM28, (2018/05/14 16:36UT)
Object            RA         Dec     mag  sep  mel
Vega           18:37:33.6 +38:48:06  0.0 26.02 107
27Bet Her      16:31:00.6 +21:27:02  2.8  8.33 139
PPM 105547     17:07:04.7 +22:03:37  5.6  0.57 133
PPM 105531     17:06:13.3 +21:26:20  8.1  0.15 133
PPM 105553     17:07:10.0 +21:33:25 10.4  0.10 133
14LM28         17:06:50.1 +21:29:18 11.9       133
Positions are for equinox of date

Azimuth is measured in degrees eastward from north. North is at an azimuth of 0, due East is at an azimuth of 90 degrees, due South is 180, and due West is 270.

Do not use the listing below for the RECON CPC 1100 telescopes. This is provided for other non-team facilities.

Star training set for 14LM28, (2018/05/14 16:36UT)
Object            RA         Dec     mag  sep  mel
Vega           18:36:56.6 +38:47:06  0.0 26.02 107
27Bet Her      16:30:13.1 +21:29:22  2.8  8.33 139
PPM 105547     17:06:17.9 +22:05:02  5.6  0.57 133
PPM 105531     17:05:26.2 +21:27:47  8.1  0.15 133
PPM 105553     17:06:22.9 +21:34:50 10.4  0.10 133
14LM28         17:06:03.0 +21:30:44 11.9       133
Positions are for J2000

Event circumstances last updated at 2017/07/01 17:38:42 UT

Marc W. Buie, Southwest Research Institute

RECON